But the rapidly-increasing trade of the port soon outstripped the landing facilities afforded by these places. This led to the laying out of other frontages to the river by private enterprise for the landing of certain articles of merchandise, mostly of a bulky nature, which the Legal Quays gradually became unable to accommodate. These places were known as Sufferance Wharves, as distinguished from the Legal Quays, because for every particular article landed at them it was necessary to obtain from the Customs a special sufferance or permission for such landing, which might at any time be withdrawn; whereas at the Legal Quays any goods might be landed free from any limitation of privilege. As the commerce of the port increased the Sufferance Wharves multiplied with marvellous rapidity, and extended so far down the river as Blackwall. In the year 1590 we find that the total amount of Customs Receipts for England and Wales on Exports and Imports was £50,000. In 1613 they realised £148,075. 7_s._ 8_d._, of which London alone contributed £109,572. 18_s._ 6_d._ Indeed, so late as 1796 three-fifths of the commerce of the country was centered in London; and, until the commencement of the present century four-fifths of the Customs Dues were also collected here. The ravages of the Great Fire of 1666 necessitated the rearrangement of the Legal Quays, and an Act was passed appointing commissioners to define the limits of the port, and to appoint places for landing and loading goods therein. The wharves set out by the commissioners were twenty-one in number, as follows: Chester’s Quay. Brewer’s Quay. Galley Quay. Wool Dock. Custom-house Quay. Porteus’ Quay. Bear Quay. Sab’s Quay. Wiggan’s Quay. Young’s Quay. Ralph’s Quay. Dice Quay. Smart’s Quay. Somer’s Quay. Lyon’s Quay. Botolph Quay. Hammond’s Quay. Gaunt’s Quay. Cock’s Quay. Fresh Wharf. Billingsgate.